DUMET Medical DUMET Medical Solved Paper-2001

  • question_answer
    Haustorial root is present in :

    A)  Zea mays      

    B)  Cactus

    C)  Cuscuta        

    D)  Orchid

    Correct Answer: C

    Solution :

    Haustorial roots also known as sucking roots, found in parasitic plants like Cuscuta, are the adventitious roots which enter the host plant developing contact with xylem, phloem, to suck food and water from them. In many epiphytes the aerial roots are covered by a hygroscopic velamen tissue. They absorb water from the atmosphere, e.g., Epiphytic orchids. In epiphytic orchids, the roots which arise to fix the plant to the substratum are called as clinging roots.


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